Carbureter for explosive-motors.



PATENTED DEC. 3, 1903.

I. & G; LONGUBMARE. GARBURETER FOR EXPLOSIVEMOTORS..

APPLIOATION FILED 'OUT. 13, 1902.

N0 MODEL.

. UNITED STATES Patented December 8, 1903.

1 PATENT OFFICE.

FERNAND LONGUEMARE AND GEORGES LONGUEMARE, OF PARIS, FRANCE, ASSIGNORS TO AMELIE ADELE LONGUEMARE, OF PARIS, FRANCE.

CARBURETER FOR EXPLOSlVE-MOTO RS;

SPECIFICATION forming part of Letters Patent N 0. 746,119, dated December 8, 1903.

Application filed October 13,1902. Serial No. 127,047. (Nomode'ld To all whom it may concern:

Be it known that we, FERNAND London- MARE and GEORGES LONGUEMARE, citizens of the Republic of France, residing at 'Paris, France, have invented certain new and useful Improvements in or Relating to Carburetors for Explosive-Motors andthe Like, of which the following is a specification.

This invention relates to a carburetor for motors driven by an explosive mixture coinposed of hydrocarbon vapor and air and formed by the action of the suction of the motor in the carbureter, the supply of hydrocarbon being effected without special mechanism at a constant level and underany desired pressure, natural or artificial, the supply of mixture being controllable at willin the most precise manner and in any desired proportions.

The characteristic features of this carbuieter consist,essentially, in the combination, with a distributing or supply pipe for the hydrocarbon arranged in a mixing-chamber, of an air-conduit surrounding said distributionpipe and projecting beyond it to a certain extent, so as to insure the intimate contact of the air drawn in with the stream of hydrocarbon distributed before the difiusion of the mixture in the chamber of the carburetor, the difiusion or intimate mixing being effected by the passage of the mixture through a grat ing constituted bya disk supported by the spindle or by the needle-valve spindle in the hydrocarbon-supply tube, the extent of rise of which is controllable at will by a conical or other abutment arranged horizontally above the upper end of this spindle and adapted to limit the upward movement of the spindle more or less, according as the cone is moved more'or less into the path of the spindle, and thereby to efiect at will .and with great precision an absolutely exact and proportionate regulation of the hydrocarbon-supply to the distributing-pipe. This regulation of thehydrocarbon-feed is combined in the ordinary way with the admission of air for the formation of the explosive mixture in desired pro-' portions.

In the accompanying drawings, Figure 1 shows a vertical section of a carbureter according to the present invention. Fig. 2 is a cross-section on the line A B of Fig. 1.

The hydrocarbon-supply pipe or device a,

with inclined or other spraying passages or holes b, is situated in the center of the mixing-chamber c. The latter is surrounded by a heating chamber or jacket (1, heated by the circulation of the exhaust-gases flowing through the tubes of. The partctis mounted .upon the upper end ofavertieal central tube 9,

in to which hydrocarbon is introduced through a lower tube It, connected to'it.

Ooncentrically arranged Y in the mixingchamber 0 is a sleeve or tubular partition 2', secured to the bottom of this chamber in any suitable manner. The base of the sleeve 45 is enlarged atj, so as to extend around the per- The updrical portion Z, extending beyond the distri-' bution device a and forming between its inner circumference and the tube g an annular space m, through which the air admitted through the passages 10 is drawn and brought in contact with the jets of hydrocarbon discharged through the passages 71 of the distributing device. The contact of the air and hydrocarbon before the difiusion of the mixture in the chamber a is sufliciently prolonged in order to effect immediately an intimate mixture by the extension of the cylindrical portion l of the sleeve 2'.

The tube 9, as well as the distribution device a, surmounting the latter, are traversed in an axial vertical direction by a spindle n, with a pointed end 0 acting as a needle-valve in cooperation with an openingp for the admission of hydrocarbon to the distributionchamber-in the tube g and with which it forms an internal space connected with the device (land by radial passages with the spraying channels or perforations b in the latter. The spindle it carries at its end above the sleeve t' a perforated disk g, which forms a grating. The mixture flowing through the upper part Z of the sleeve 2' before it arrives at the supply-tube to the motor passes through the disk in order to make the mixture of air and vapor as intimate as possible.

The chamber 0 is surmounted by a tubular neck u for the admission of the mixture to the motor. This neck is at its rear part traversed diametrically by a rod with a Wedge or cone 4*, terminating at one end in a rod 8, seated in the corresponding wall of the tubular portion 14, while the other end is formed with a screw 15, which extends through the corresponding of the wall of the tube'tt and can be screwed in and out in order to vary the position of the cone '1'. This cone or abutment 9* is situated above the upper end of the spindle q of the needle-valve 0, so that according to the transverse adjustment by the screw t it will present to the upper end of the spindle an abutment at a variable height, thereby limiting the vertical movement of the rod n, and thus controlling the opening of the supply'orifice p by the needle 0, and consequently the distribution of the hydrocarbon to the chamber 60. Finally, the tube It may be provided with supplementary airadmission ports v, regulated by a perforated ring m of known kind.

The operation of the apparatus is as follows: The tubular portion to being connected to the admission-tube of the motor and the pipe 71, to the hydrocarbonsupply pipe, the disk (1 is raised upon the suction of the pisston in the motor-cylinder, and consequently also the spindle n, the needle-valve of which opens the orifice 19, through which the hydrocarbon under a desired pressure flows into the supply-chamberof the distribution device a. There is thus produced a supply of air simultaneously drawn in through the orifices with a supply of the hydrocarbon, which passes through the distributionpassages b of the part a. The air introduced through the orifices 70 into the enlarged portion j of the sleeve t' passes through the restricted cylindrical portion Z of the latter and comes into intimate contact with the jets of hydrocarbon discharged through the passages b, and this contact is continued during the flow through the cylindrical part Z, thereby producing an initial and intimate mixture of the air with the hydrocarbon. This mixture encounters upon leaving the sleeve t the grating q above the latter, through which it is compelled to pass, whereby a thorough agitation and a complete mixingareobtained. Themixturethen passes the tube to, and during its passage through the latter it can be modified at will by a supplementary admission of aireffected through the ports o, under the control of the annular regulator 00. The spindle 71 upon being raised comes in contact with its upper end with the conical abutment r, the position of which has been previously adjusted by the screw 25 in such a manner that the extent of rise of the spindle corresponds with that necessary for a desired supply of the hydrocarbon through the opening This regulation can be modified at will during the Working of the motor to any desired extent by adjusting the screw 25 in order to vary thetheight of the conical partrabove the endof the spindlen. closing of the opening 29 by the needle 0 is effected by the descent of the spindle n and the disk g upon the stoppage of the aspira' tion by the motor. Therefore the weight of these parts should be greater than that cor responding to the feeding pressure of the hydrocarhon exerted upon the needlevalve 0.

That we claim as our invention, and desire to secure by Letters Patent, is

1. A carbureter for explosive-motors and the like comprising a combustible-charge-inlet pipe, an air inlet and mixing sleeve surrounding said pipe, said sleeve having an upper cylindrical portion which surrounds, in close proximity, the upper partof the chargeinlct device and extends beyond the same, a needle-valve having a perforated disk on the upper part of its spi mile and cooperating with a port to eit'ect and control the supply of charge, and an adjustable conical abutment in the path of said spindle to limit the upward movement of the same substantially as described.

2. A carbureter for explosive-motors and the like comprising a com bustible-charge-inlet pipe with outwardly-directed sprayingperforations in its upper part, a cylindro-conical air-inlet sleeve surrounding said pipe and extending upward beyond it, a loose Vertically-movable valve-spi ndle in said inlet-pipe a perforated disk on said spindle an adj ustable conical abutmentin the path ofthe valvespindle, an inclosing casing and a heatingjacket surrounding the casing substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

FERNAND LONGUEMARE. GEORGES LONGUEMARE. Witnesses:

LOUIS SULLIGER, EDWARD P. MAoLEAN.

The 

